You forget about drug trade, tax evasion, bypassing currency controls and many other illegal use cases.
"The crypto community must be applauded for its focus on identifying and measuring – and mitigating – illicit crypto activity. And the fiat community has much to learn from the crypto community." - https://antimoneylaundering.wtf/f/financial-crime-estimates-...
Pick any illegal use case online at random. 99% probability there's an option to pay via bitcoin or other crypto.
Pick any legal use case at random. 95% probability online, 99.9% probability offline there's no option to pay in bitcoin.
What kind of evidence would you expect to see?